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Mu YL, He Q, Li CY, Sheng D, Wu SH, Liu Y, Ren HT, Han X. Contributions of Surface Oxidizing Species and Cu + to the Antibacterial Activities of Cu 2O with Different Crystalline Structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39137090 DOI: 10.1021/acs.langmuir.4c00984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Although precise regulation of the crystalline structures of metal oxides is an effective method to improve their antibacterial activities, the corresponding mechanisms involved in this process are still unclear. In this study, three kinds of cuprous oxide (Cu2O) samples with different structures of cubes, octahedra, and rhombic dodecahedra (c-Cu2O, o-Cu2O, and r-Cu2O) have been successfully synthesized and their antibacterial activities are compared. The antibacterial activities follow the order of r-Cu2O > o-Cu2O > c-Cu2O, revealing the significant dependence of the antibacterial activities on the crystalline structures of Cu2O. Quenching experiments, as well as the NBT and DPD experiments indicate that ≡CuII─OO• superoxo and ≡CuII─OOH peroxo, instead of •OH, O2•-, and H2O2, are the primary oxidizing species in the oxidative damage to E. coli. Raman analysis further confirms the presence of both ≡CuII─OO• superoxo and ≡CuII─OOH peroxo on the surface of r-Cu2O. On the other hand, the NCP experiment reveals that Cu+, instead of Cu2+, also contributes to the antibacterial process. This study provides new insight into the antibacterial mechanisms of Cu2O.
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Affiliation(s)
- Yun-Long Mu
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Qing He
- Instrument analysis and testing center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Chun-Yan Li
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Da Sheng
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Song-Hai Wu
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
| | - Yong Liu
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, PR China
| | - Hai-Tao Ren
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China
| | - Xu Han
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, PR China
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2
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Vechalapu SK, Kumar R, Chatterjee N, Gupta S, Khanna S, Thimmappa PY, Senthil S, Eerlapally R, Joshi MB, Misra SK, Draksharapu A, Allimuthu D. Redox modulator iron complexes trigger intrinsic apoptosis pathway in cancer cells. iScience 2024; 27:109899. [PMID: 38799569 PMCID: PMC11126827 DOI: 10.1016/j.isci.2024.109899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/21/2024] [Accepted: 05/01/2024] [Indexed: 05/29/2024] Open
Abstract
The emergence of multidrug resistance in cancer cells necessitates the development of new therapeutic modalities. One way cancer cells orchestrate energy metabolism and redox homeostasis is through overloaded iron pools directed by iron regulatory proteins, including transferrin. Here, we demonstrate that targeting redox homeostasis using nitrogen-based heterocyclic iron chelators and their iron complexes efficiently prevents the proliferation of liver cancer cells (EC50: 340 nM for IITK4003) and liver cancer 3D spheroids. These iron complexes generate highly reactive Fe(IV)=O species and accumulate lipid peroxides to promote oxidative stress in cells that impair mitochondrial function. Subsequent leakage of mitochondrial cytochrome c activates the caspase cascade to trigger the intrinsic apoptosis pathway in cancer cells. This strategy could be applied to leverage the inherent iron overload in cancer cells to selectively promote intrinsic cellular apoptosis for the development of unique iron-complex-based anticancer therapeutics.
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Affiliation(s)
- Sai Kumari Vechalapu
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Rakesh Kumar
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Niranjan Chatterjee
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Sikha Gupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Shweta Khanna
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Pooja Yedehalli Thimmappa
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, India
| | - Sathyapriya Senthil
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Raju Eerlapally
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Manjunath B. Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, India
| | - Santosh K. Misra
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Apparao Draksharapu
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
| | - Dharmaraja Allimuthu
- Department of Chemistry, Indian Institute of Technology Kanpur, Uttar Pradesh 208016, India
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3
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Diao D, Baidiuk A, Chaussy L, De Assis Modenez I, Ribas X, Réglier M, Martin-Diaconescu V, Nava P, Simaan AJ, Martinez A, Colomban C. Light-Induced Reactivity Switch at O 2-Activating Bioinspired Copper(I) Complexes. JACS AU 2024; 4:1966-1974. [PMID: 38818064 PMCID: PMC11134348 DOI: 10.1021/jacsau.4c00184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 06/01/2024]
Abstract
Using light to unveil unexplored reactivities of earth-abundant metal-oxygen intermediates is a formidable challenge, given the already remarkable oxidation ability of these species in the ground state. However, the light-induced reactivity of Cu-O2 intermediates still remains unexplored, due to the photoejection of O2 under irradiation. Herein, we describe a photoinduced reactivity switch of bioinspired O2-activating CuI complexes, based on the archetypal tris(2-pyridyl-methyl)amine (TPA) ligand. This report represents a key precedent for light-induced reactivity switch in Cu-O2 chemistry, obtained by positioning C-H substrates in close proximity of the active site. Open and caged CuI complexes displaying an internal aryl ether substrate were evaluated. Under light, a Cu-O2 mediated reaction takes place that induces a selective conversion of the internal aryl ether unit to a phenolate-CH2- moiety with excellent yields. This light-induced transformation displays high selectivity and allows easy postfunctionalization of TPA-based ligands for straightforward preparation of challenging heteroleptic structures. In the absence of light, O2 activation results in the standard oxidative cleavage of the covalently attached substrate. A reaction mechanism that supports a monomeric cupric-superoxide-dependent reactivity promoted by light is proposed on the basis of reactivity studies combined with (TD-) DFT calculations.
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Affiliation(s)
- Donglin Diao
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Anna Baidiuk
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Leo Chaussy
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | | | - Xavi Ribas
- Institut
de Quimica Computacional i Catalisi (IQCC), Departament de Quimica, Universitat de Girona, Girona E-17003, Catalonia, Spain
| | - Marius Réglier
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | | | - Paola Nava
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - A. Jalila Simaan
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Alexandre Martinez
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
| | - Cédric Colomban
- Aix
Marseille Univ, CNRS, Centrale Marseille, iSm2, 13013 Marseille, France
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4
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Chimlert J, Suktanarak P, Plainpan N, Paokhan M, Tuntulani T, Leeladee P. Cycloalkane Oxidation Catalyzed by Copper‐based Catalysts with H
2
O
2
under Mild Conditions. ChemistrySelect 2023. [DOI: 10.1002/slct.202204776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Jantira Chimlert
- Department of Chemistry Faculty of Science Chulalongkorn University Bangkok 10330 Thailand
| | - Pattira Suktanarak
- Faculty of Sport and Health Sciences Thailand National Sport University Lampang Campus Lampang 52100 Thailand
| | - Nukorn Plainpan
- Laboratory for Molecular Engineering of Optoelectronic Nanomaterials (LIMNO) École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
| | - Mantana Paokhan
- Department of Chemistry Faculty of Science Chulalongkorn University Bangkok 10330 Thailand
| | - Thawatchai Tuntulani
- Department of Chemistry Faculty of Science Chulalongkorn University Bangkok 10330 Thailand
| | - Pannee Leeladee
- Department of Chemistry Faculty of Science Chulalongkorn University Bangkok 10330 Thailand
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5
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Wei Q, Xue S, Wu W, Liu S, Li S, Zhang C, Jiang S. Plasma Meets MOFs: Synthesis, Modifications, and Functionalities. CHEM REC 2023:e202200263. [PMID: 36633461 DOI: 10.1002/tcr.202200263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/25/2022] [Indexed: 01/13/2023]
Abstract
As a porous and network materials consisting of metals and organic ligands, metal-organic frameworks (MOFs) have become one of excellent crystalline porous materials and play an important role in the era about materials science. Plasma, as a useful tool for stimulating efficient reactions under many conditions, and the plasma-assisted technology gets more attractions and endows MOFs more properties. Based on its feature, the research about the modifications and functionalities of MOFs have been developing a certain extent. This review contains a description of the methods for plasma-assisted modification and synthesis of MOFs, with specifically focusing on the plasma-assisted potential for modifications and functionalities of MOFs. The different applications of plasma-assisted MOFs were also presented.
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Affiliation(s)
- Qian Wei
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Sen Xue
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Weijie Wu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Suli Liu
- Key Laboratory of Advanced Functional Materials of Nanjing, Nanjing Xiaozhuang University, Nanjing, 211171, China
| | - Shanshan Li
- College of Pharmacy, Southwest Minzu University, Chengdu, 610000, China
| | - Chunmei Zhang
- Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Shahua Jiang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
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6
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Theoretical perspective on mononuclear copper-oxygen mediated C–H and O–H activations: A comparison between biological and synthetic systems. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63974-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Richezzi M, Ferreyra J, Puzzolo J, Milesi L, Palopoli CM, Moreno DM, Hureau C, Signorella SR. Versatile Activity of a Copper(II) Complex Bearing a N4‐Tetradentate Schiff Base Ligand with Reduced Oxygen Species. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Micaela Richezzi
- Universidad Nacional de Rosario Facultad de Ciencias Bioquimicas y Farmaceuticas Química Física ARGENTINA
| | - Joaquín Ferreyra
- Universidad Nacional de Rosario Facultad de Ciencias Bioquimicas y Farmaceuticas Química Física ARGENTINA
| | - Juan Puzzolo
- Universidad Nacional de Rosario Facultad de Ciencias Bioquimicas y Farmaceuticas Química Física ARGENTINA
| | - Lisandro Milesi
- Universidad Nacional de Rosario Facultad de Ciencias Bioquimicas y Farmaceuticas Química Física ARGENTINA
| | - Claudia M. Palopoli
- Universidad Nacional de Rosario Facultad de Ciencias Bioquimicas y Farmaceuticas Química Física ARGENTINA
| | - Diego M. Moreno
- Universidad Nacional de Rosario Facultad de Ciencias Bioquimicas y Farmaceuticas Química Física ARGENTINA
| | - Christelle Hureau
- CNRS: Centre National de la Recherche Scientifique LCC - Laboratoire de Chimie de Coordination FRANCE
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8
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Chen CY, Tsai ML. Tris(Imidazolyl) Dicopper(I) Complex and its Reactivity to Exert Catalytic Oxidation of Sterically Hindered Phenol Substrates via a [Cu2O]2+ Core. Dalton Trans 2022; 51:2428-2443. [DOI: 10.1039/d1dt04084g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Cu ion ligated with histidine residues is a common active site motif of various Cu-containing metalloenzymes exerting versatile catalytic oxidation reactions. Due to the scarce of structurally characterized biomimetic...
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9
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Quek SY, Debnath S, Laxmi S, van Gastel M, Krämer T, England J. Sterically Stabilized End-On Superoxocopper(II) Complexes and Mechanistic Insights into Their Reactivity with O-H, N-H, and C-H Substrates. J Am Chem Soc 2021; 143:19731-19747. [PMID: 34783549 DOI: 10.1021/jacs.1c07837] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Instability of end-on superoxocopper(II) complexes, with respect to conversion to peroxo-bridged dicopper(II) complexes, has largely constrained their study to very low temperatures. This limits their kinetic capacity to oxidize substrates. In response, we have developed a series of bulky ligands, Ar3-TMPA (Ar = tpb, dpb, dtbpb), and used them to support copper(I) complexes that react with O2 to yield [CuII(η1-O2•-)(Ar3-TMPA)]+ species, which are stable against dimerization at all temperatures. Binding of O2 saturates at subambient temperatures and can be reversed by warming. The onset of oxygenation for the Ar = tpb and dpb systems is observed at 25 °C, and all three [CuII(η1-O2•-)(Ar3-TMPA)]+ complexes are stable against self-decay at temperatures of ≤-20 °C. This provides a wide temperature window for study of these complexes, which was exploited by performing extensive reaction kinetics measurements for [CuII(η1-O2•-)(tpb3-TMPA)]+ using a broad range of O-H, N-H, and C-H bond substrates. This includes correlation of second order rate constants (k2) versus oxidation potentials (Eox) for a range of phenols, construction of Eyring plots, and temperature-dependent kinetic isotope effect (KIE) measurements. The data obtained indicate that reaction with all substrates proceeds via H atom transfer (HAT), reaction with the phenols proceeds with significant charge transfer, and full tunneling of both H and D atoms occurs in the case of 1,2-diphenylhydrazine and 4-methoxy-2,6-di-tert-butylphenol. Oxidation of C-H bonds proved to be kinetically challenging, and whereas [CuII(η1-O2•-)(tpb3-TMPA)]+ can oxidize moderately strong O-H and N-H bonds, it is only able to oxidize very weak C-H bonds.
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Affiliation(s)
- Sebastian Y Quek
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Suman Debnath
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Shoba Laxmi
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Maurice van Gastel
- Max-Planck-Institut für Kohlenforschung, Mülheim an der Ruhr D-45470, Germany
| | - Tobias Krämer
- Department of Chemistry, Maynooth University, Maynooth, Co. Kildare W23 F2H6, Ireland.,Hamilton Institute, Maynooth University, Maynooth, Co. Kildare W23 F2H6, Ireland
| | - Jason England
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.,Department of Chemistry, University of Lincoln, Lincoln LN6 7TW, U.K
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10
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Kumar B, Das T, Das S, Maniukiewicz W, Nesterov DS, Kirillov AM, Das S. Coupling 6-chloro-3-methyluracil with copper: structural features, theoretical analysis, and biofunctional properties. Dalton Trans 2021; 50:13533-13542. [PMID: 34505590 DOI: 10.1039/d1dt02018h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As nucleobases in RNA and DNA, uracil and 5-methyluracil represent a recognized class of bioactive molecules and versatile ligands for coordination compounds with various biofunctional properties. In this study, 6-chloro-3-methyluracil (Hcmu) was used as an unexplored building block for the self-assembly generation of a new bioactive copper(II) complex, [Cu(cmu)2(H2O)2]·4H2O (1). This compound was isolated as a stable crystalline solid and fully characterized in solution and solid state by a variety of spectroscopic methods (UV-vis, EPR, fluorescence spectroscopy), cyclic voltammetry, X-ray diffraction, and DFT calculations. The structural, topological, H-bonding, and Hirshfeld surface features of 1 were also analyzed in detail. The compound 1 shows a distorted octahedral {CuN2O4} coordination environment with two trans cmu- ligands adopting a bidentate N,O-coordination mode. The monocopper(II) molecular units participate in strong H-bonding interactions with water molecules of crystallization, leading to structural 0D → 3D extension into a 3D H-bonded network with a tfz-d topology. Molecular docking and ADME analysis as well as antibacterial and antioxidant activity studies were performed to assess the bioactivity of 1. In particular, this compound exhibits a prominent antibacterial effect against Gram negative (E. coli, P. aeruginosa) and positive (S. aureus, B. cereus) bacteria. The obtained copper(II) complex also represents the first structurally characterized coordination compound derived from 6-chloro-3-methyluracil, thus introducing this bioactive building block into a family of uracil metal complexes with notable biofunctional properties.
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Affiliation(s)
- Brajesh Kumar
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna 800005, India.
| | - Tushar Das
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna 800005, India.
| | - Subhadeep Das
- Department of Life Science and Biotechnology, Jadavpur University, 188 Raja S.C. Mallick Rd, Kolkata 700032, India
| | - Waldemar Maniukiewicz
- Institute of General and Ecological Chemistry, Lodz University of Technology, Żeromskiego 116, Łódź, Poland
| | - Dmytro S Nesterov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | - Alexander M Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal. .,Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow, 117198, Russian Federation
| | - Subrata Das
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna 800005, India.
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11
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Romo AIB, Carepo MP, Levín P, Nascimento OR, Díaz DE, Rodríguez-López J, León IE, Bezerra LF, Lemus L, Diógenes ICN. Synergy of DNA intercalation and catalytic activity of a copper complex towards improved polymerase inhibition and cancer cell cytotoxicity. Dalton Trans 2021; 50:11931-11940. [PMID: 34374389 DOI: 10.1039/d1dt01358k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Improving the binding of metal complexes to DNA to boost cancer cell cytotoxicity requires fine tuning of their structural and chemical properties. Copper has been used as a metal center in compounds containing intercalating ligands due to its ability to catalytically generate reactive oxygen species (ROS), such as hydroxyl radicals (OH˙). We envision the synergy of DNA binding and ROS generation in proximity to target DNA as a powerful chemotherapy treatment. Here, we explore the use of [Cu(2CP-Bz-SMe)]2+ (2CP-Bz-SMe = 1,3-bis(1,10-phenanthrolin-2-yloxy)-N-(4-(methylthio)benzylidene)propan-2-amine) for this purpose by characterizing its cytotoxicity, DNA binding, and ability to affect DNA replication through the polymerase chain reaction - PCR and nuclease assays. We determined the binding (Kb) and Stern-Volmer constants (KSV) for complex-DNA association of 5.8 ± 0.14 × 104 and 1.64 (±0.08), respectively, through absorption titration and competitive fluorescence experiments. These values were superior to those of other Cu-complex intercalators. We hypothesize that the distorted trigonal bipyramidal geometry of [Cu(2CP-Bz-SMe)]2+ allows the phenanthroline fragments to be better accommodated into the DNA double helix. Moreover, the aromaticity of these fragments increases the local hydrophobicity thus increasing the affinity for the hydrophobic domains of DNA. Nuclease assays in the presence of common reducing agents ascorbic acid, nicotinamide adenine dinucleotide, and glutathione showed the effective degradation of DNA due to the in situ generation of OH˙. The [Cu(2CP-Bz-SMe)]2+ complex showed cytotoxicity against the following human cancer cells lines A549, MCF-7, MDA-MB-231 and MG-63 with half maximal inhibitory concentration (IC50) values of 4.62 ± 0.48, 5.20 ± 0.76, 5.70 ± 0.42 and 2.88 ± 0.66 μM, respectively. These low values of IC50, which are promising if compared to that of cisplatin, are ascribed to the synergistic effect of ROS generation with the intercalation ability into the DNA minor grooves and blocking DNA replication. This study introduces new principles for synergizing the chemical and structural properties of intercalation compounds for improved drug-DNA interactions targeting cancer.
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Affiliation(s)
- Adolfo I B Romo
- Departamento de Química Orgânica e Inorgânica, Centro de Ciências, Universidade Federal do Ceará, Cx. Postal 6021, Fortaleza, CE 60451-970, Brasil.
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12
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Activity-based photoacoustic probe for biopsy-free assessment of copper in murine models of Wilson's disease and liver metastasis. Proc Natl Acad Sci U S A 2021; 118:2106943118. [PMID: 34480005 DOI: 10.1073/pnas.2106943118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 08/05/2021] [Indexed: 12/29/2022] Open
Abstract
The development of high-performance photoacoustic (PA) probes that can monitor disease biomarkers in deep tissue has the potential to replace invasive medical procedures such as a biopsy. However, such probes must be optimized for in vivo performance and exhibit an exceptional safety profile. In this study, we have developed PACu-1, a PA probe designed for biopsy-free assessment (BFA) of hepatic Cu via photoacoustic imaging. PACu-1 features a Cu(I)-responsive trigger appended to an aza-BODIPY dye platform that has been optimized for ratiometric sensing. Owing to its excellent performance, we were able to detect basal levels of Cu in healthy wild-type mice as well as elevated Cu in a Wilson's disease model and in a liver metastasis model. To showcase the potential impact of PACu-1 for BFA, we conducted two blind studies in which we were able to successfully identify Wilson's disease animals from healthy control mice in each instance.
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13
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Lai C, Shi X, Li L, Cheng M, Liu X, Liu S, Li B, Yi H, Qin L, Zhang M, An N. Enhancing iron redox cycling for promoting heterogeneous Fenton performance: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 775:145850. [PMID: 33631587 DOI: 10.1016/j.scitotenv.2021.145850] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Conventional water treatment methods are difficult to remove stubborn pollutants emerging from surface water. Advanced oxidation processes (AOPs) can achieve a higher level of mineralization of stubborn pollutants. In recent years, the Fenton process for the degradation of pollutants as one of the most efficient ways has received more and more attention. While homogeneous catalysis is easy to produce sludge and the catalyst cannot be cycled. In contrast, heterogeneous Fenton-like reaction can get over these drawbacks and be used in a wider range. However, the reduction of Fe (III) to Fe(II) by hydrogen peroxide (H2O2) is still the speed limit step when generating reactive oxygen species (ROS) in heterogeneous Fenton system, which restricts the efficiency of the catalyst to degrade pollutants. Based on previous research, this article reviews the strategies to improve the iron redox cycle in heterogeneous Fenton system catalyzed by iron materials. Including introducing semiconductor, the modification with other elements, the application of carbon materials as carriers, the introduction of metal sulfides as co-catalysts, and the direct reduction with reducing substances. In addition, we also pay special attention to the influence of the inherent properties of iron materials on accelerating the iron redox cycle. We look forward that the strategy outlined in this article can provide readers with inspiration for constructing an efficient heterogeneous Fenton system.
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Affiliation(s)
- Cui Lai
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
| | - Xiaoxun Shi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Ling Li
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Min Cheng
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
| | - Xigui Liu
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Shiyu Liu
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Bisheng Li
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Huan Yi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Lei Qin
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Mingming Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Ning An
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
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14
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Investigating reactivity and electronic structure of copper(II)-polypyridyl complexes and hydrogen peroxide. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Paul M, Teubner M, Grimm‐Lebsanft B, Golchert C, Meiners Y, Senft L, Keisers K, Liebhäuser P, Rösener T, Biebl F, Buchenau S, Naumova M, Murzin V, Krug R, Hoffmann A, Pietruszka J, Ivanović‐Burmazović I, Rübhausen M, Herres‐Pawlis S. Exceptional Substrate Diversity in Oxygenation Reactions Catalyzed by a Bis(μ-oxo) Copper Complex. Chemistry 2020; 26:7556-7562. [PMID: 32104930 PMCID: PMC7317579 DOI: 10.1002/chem.202000664] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/26/2020] [Indexed: 12/18/2022]
Abstract
The enzyme tyrosinase contains a reactive side-on peroxo dicopper(II) center as catalytically active species in C-H oxygenation reactions. The tyrosinase activity of the isomeric bis(μ-oxo) dicopper(III) form has been discussed controversially. The synthesis of bis(μ-oxo) dicopper(III) species [Cu2 (μ-O)2 (L1)2 ](X)2 ([O1](X)2 , X=PF6 - , BF4 - , OTf- , ClO4 - ), stabilized by the new hybrid guanidine ligand 2-{2-((dimethylamino)methyl)phenyl}-1,1,3,3-tetramethylguanidine (L1), and its characterization by UV/Vis, Raman, and XAS spectroscopy, as well as cryo-UHR-ESI mass spectrometry, is described. We highlight selective oxygenation of a plethora of phenolic substrates mediated by [O1](PF6 )2 , which results in mono- and bicyclic quinones and provides an attractive strategy for designing new phenazines. The selectivity is predicted by using the Fukui function, which is hereby introduced into tyrosinase model chemistry. Our bioinspired catalysis harnesses molecular dioxygen for organic transformations and achieves a substrate diversity reaching far beyond the scope of the enzyme.
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Affiliation(s)
- Melanie Paul
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Melissa Teubner
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | | | - Christiane Golchert
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Yannick Meiners
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Laura Senft
- Department of Chemistry and PharmacyFriedrich-Alexander-University of Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Kristina Keisers
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Patricia Liebhäuser
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Thomas Rösener
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Florian Biebl
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | - Sören Buchenau
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | - Maria Naumova
- Deutsches Elektronen-Synchrotron DESYNotkestrasse 8522607HamburgGermany
| | - Vadim Murzin
- Deutsches Elektronen-Synchrotron DESYNotkestrasse 8522607HamburgGermany
| | - Roxanne Krug
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf at Forschungszentrum Jülich52425JülichGermany
| | - Alexander Hoffmann
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Jörg Pietruszka
- Institute of Bioorganic ChemistryHeinrich Heine University Düsseldorf at Forschungszentrum Jülich52425JülichGermany
- Institute of Bio- and Geoscience (IBG-1: Biotechnology)Forschungszentrum Jülich GmbH52425JülichGermany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry and PharmacyFriedrich-Alexander-University of Erlangen-NürnbergEgerlandstrasse 191058ErlangenGermany
| | - Michael Rübhausen
- Department of PhysicsUniversity of HamburgLuruper Chaussee 14922761HamburgGermany
| | - Sonja Herres‐Pawlis
- Department of Inorganic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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16
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Mononuclear copper(II) complexes containing a macrocyclic ditopic ligand: Synthesis, structures and properties. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Quist DA, Ehudin MA, Karlin KD. Unprecedented direct cupric-superoxo conversion to a bis- μ-oxo dicopper(III) complex and resulting oxidative activity. Inorganica Chim Acta 2019; 485:155-161. [PMID: 30988551 PMCID: PMC6461407 DOI: 10.1016/j.ica.2018.10.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Investigations of small molecule copper-dioxygen chemistry can and have provided fundamental insights into enzymatic processes (e.g., copper metalloenzyme dioxygen binding geometries and their associated spectroscopy and substrate reactivity). Strategically designing copper-binding ligands has allowed for insight into properties that favor specific (di)copper-dioxygen species. Herein, the tetradentate tripodal TMPA-based ligand (TMPA = tris((2-pyridyl)methyl)amine) possessing a methoxy moiety in the 6-pyridyl position on one arm (OCH3TMPA) was investigated. This system allows for a trigonal bipyramidal copper(II) geometry as shown by the UV-vis and EPR spectra of the cupric complex [(OCH3TMPA)CuII(OH2)](ClO4)2. Cyclic voltammetry experiments determined the reduction potential of this copper(II) species to be -0.35 V vs. Fc+/0 in acetonitrile, similar to other TMPA-derivatives bearing sterically bulky 6-pyridyl substituents. The copper-dioxygen reactivity is also analogous to these TMPA-derivatives, affording a bis-μ-oxo dicopper(III) complex, [{(OCH3TMPA)CuIII}2(O2-)2]2+, upon oxygenation of the copper(I) complex [(OCH3TMPA)CuI](B(C6F5)4) at cryogenic temperatures in 2-methyltetrahydrofuran. This highly reactive intermediate is capable of oxidizing phenolic substrates through a net hydrogen atom abstraction. However, after bubbling of the precursor copper(I) complex with dioxygen at very low temperatures (-135 °C), a cupric superoxide species, [(OCH3TMPA)CuII(O2 •-)]+, is initially formed before slowly converting to [{(OCH3TMPA)CuIII}2(O2-)2]2+. This appears to be the first instance of the direct conversion of a cupric superoxide to a bis-μ-oxo dicopper(III) species in copper(I)-dioxygen chemistry.
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Affiliation(s)
- David A. Quist
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Melanie A. Ehudin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Kenneth D. Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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18
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Paria S, Ohta T, Morimoto Y, Sugimoto H, Ogura T, Itoh S. Structure and Reactivity of Copper Complexes Supported by a Bulky Tripodal N
4
Ligand: Copper(I)/Dioxygen Reactivity and Formation of a Hydroperoxide Copper(II) Complex. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sayantan Paria
- Department of Material and Life Science Division of Advanced Science and Biotechnology Graduate School of Engineering Osaka University 2‐1 Yamada‐oka 565–0871 Osaka Suita Japan
- Graduate School of Life Science Department of Chemistry Indian Institute of Technology Delhi Hauz Khas 110016 New Delhi India
| | - Takehiro Ohta
- Picobiology Institute Graduate School of Life Science University of Hyogo RSC‐UH LP Center 679–5148 Hyogo Koto 1‐1‐1, Sayo‐cho, Sayo‐gun Japan
| | - Yuma Morimoto
- Department of Material and Life Science Division of Advanced Science and Biotechnology Graduate School of Engineering Osaka University 2‐1 Yamada‐oka 565–0871 Osaka Suita Japan
| | - Hideki Sugimoto
- Department of Material and Life Science Division of Advanced Science and Biotechnology Graduate School of Engineering Osaka University 2‐1 Yamada‐oka 565–0871 Osaka Suita Japan
| | - Takashi Ogura
- Picobiology Institute Graduate School of Life Science University of Hyogo RSC‐UH LP Center 679–5148 Hyogo Koto 1‐1‐1, Sayo‐cho, Sayo‐gun Japan
| | - Shinobu Itoh
- Department of Material and Life Science Division of Advanced Science and Biotechnology Graduate School of Engineering Osaka University 2‐1 Yamada‐oka 565–0871 Osaka Suita Japan
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19
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Yang Z, Yu A, Shan C, Gao G, Pan B. Enhanced Fe(III)-mediated Fenton oxidation of atrazine in the presence of functionalized multi-walled carbon nanotubes. WATER RESEARCH 2018; 137:37-46. [PMID: 29525426 DOI: 10.1016/j.watres.2018.03.006] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/02/2018] [Accepted: 03/03/2018] [Indexed: 05/29/2023]
Abstract
In this study we reported that the presence of functionalized multi-walled carbon nanotubes (FCNT-H) would greatly enhance the degradation of atrazine (ATZ), a model contaminant, in the Fe(III)-mediated Fenton-like system. Efficient ATZ degradation (>90%) was achieved within 30 min in the presence of 20 mg.L-1 FCNT-H, 2.0 mg.L-1 Fe(III), and 170 mg.L-1 H2O2, whereas negligible ATZ degradation occurred in FCNT-H free system. The structure and surface chemistry of FCNT-H and other CNTs were well characterized. The formed active species were determined based on ESR analysis, and the mass balance of Fe species during the reaction was monitored. In particular, a new method based on ferrozine complexation was proposed to track the formed Fe(II). The results indicated that ATZ was mainly degraded by the generated hydroxyl radical (HO·), and Fe(III)/Fe(II) cycling was still the rate-limiting step. Besides a small fraction of Fe(III) reduced by FCNT-H, a new pathway was revealed for fast reduction of most Fe(III), i.e., reaction of FCNT-H-Fe(III) complexes with H2O2. Comparison of different CNTs-mediated Fe(III)/H2O2 systems indicated that such enhanced effect of CNTs mainly resulted from the surface carboxyl group instead of hydroxyl and carbonyl group. Combined with X-ray photoelectron spectroscopy (XPS) analysis, the electron density migration from Fe(III) to FCNT-H possibly resulted in the fast reduction of FCNT-H-Fe(III) complexes by H2O2. This study enables better understanding the enhanced Fe(III)-mediated Fenton-like reaction in the presence of MWCNTs and thus, will shed new light on how to develop more efficient similar Fenton systems via Fe(III) complexation.
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Affiliation(s)
- Zhichao Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Anqing Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chao Shan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China.
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20
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Yoneda T. Artificial Peroxidase of Hemin or Copper(II) Ion on Carbon Nanomaterial. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Tomoki Yoneda
- Graduate School of Pharmaceutical Sciences, Chiba University
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21
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Romo AIB, Abreu DS, de F. Paulo T, Carepo MSP, Sousa EHS, Lemus L, Aliaga C, Batista AA, Nascimento OR, Abruña HD, Diógenes ICN. Hydroxyl Radical Generation and DNA Nuclease Activity: A Mechanistic Study Based on a Surface-Immobilized Copper Thioether Clip-Phen Derivative. Chemistry 2016; 22:10081-9. [DOI: 10.1002/chem.201601719] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Adolfo I. B. Romo
- Departamento de Química Orgânica e Inorgânica; Universidade Federal do Ceará; Cx. Postal 6021 Fortaleza, CE 60451-970 Brasil
| | - Dieric S. Abreu
- Departamento de Química Orgânica e Inorgânica; Universidade Federal do Ceará; Cx. Postal 6021 Fortaleza, CE 60451-970 Brasil
| | - Tércio de F. Paulo
- Departamento de Química Orgânica e Inorgânica; Universidade Federal do Ceará; Cx. Postal 6021 Fortaleza, CE 60451-970 Brasil
| | - Marta S. P. Carepo
- Departamento de Química Orgânica e Inorgânica; Universidade Federal do Ceará; Cx. Postal 6021 Fortaleza, CE 60451-970 Brasil
| | - Eduardo H. S. Sousa
- Departamento de Química Orgânica e Inorgânica; Universidade Federal do Ceará; Cx. Postal 6021 Fortaleza, CE 60451-970 Brasil
| | - Luis Lemus
- Facultad de Química y Biología; Universidad de Santiago de Chile, Alameda 3363, Estación Central; Santiago Chile
| | - Carolina Aliaga
- Facultad de Química y Biología; Universidad de Santiago de Chile, Alameda 3363, Estación Central; Santiago Chile
- Centro para el Desarrollo de la Nanociencia y la Nanotecnología; CEDENNA; Santiago Chile
| | - Alzir A. Batista
- Departamento de Química; Universidade Federal de São Carlos; CP 676, CEP 13565-905 São Carlos, SP Brazil
| | - Otaciro R. Nascimento
- Departamento de Física e Informática; Instituto de Física de São Carlos; Universidade de São Paulo; CP 369, CEP 13560-970 São Carlos, SP Brazil
| | - Héctor D. Abruña
- Department of Chemistry and Chemical Biology; Cornell University; Ithaca NY 14853-1301 USA
| | - Izaura C. N. Diógenes
- Departamento de Química Orgânica e Inorgânica; Universidade Federal do Ceará; Cx. Postal 6021 Fortaleza, CE 60451-970 Brasil
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22
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Pascual-Álvarez A, Topala T, Estevan F, Sanz F, Alzuet-Piña G. Photoinduced and Self-Activated Nuclease Activity of Copper(II) Complexes withN-(Quinolin-8-yl)quinolin-8-sulfonamide - DNA and Bovine Serum Albumin Binding. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501469] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Asatkar AK, Panda S, Zade SS. Thiophene-based salen-type new ligands, their structural aspects and a dimeric Cu(II) complex. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Lee JY, Karlin KD. Elaboration of copper-oxygen mediated C-H activation chemistry in consideration of future fuel and feedstock generation. Curr Opin Chem Biol 2015; 25:184-93. [PMID: 25756327 DOI: 10.1016/j.cbpa.2015.02.014] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 02/12/2015] [Accepted: 02/16/2015] [Indexed: 12/21/2022]
Abstract
To contribute solutions to current energy concerns, improvements in the efficiency of dioxygen mediated C-H bond cleavage chemistry, for example, selective oxidation of methane to methanol, could minimize losses in natural gas usage or produce feedstocks for fuels. Oxidative C-H activation is also a component of polysaccharide degradation, potentially affording alternative biofuels from abundant biomass. Thus, an understanding of active-site chemistry in copper monooxygenases, those activating strong C-H bonds is briefly reviewed. Then, recent advances in the synthesis-generation and study of various copper-oxygen intermediates are highlighted. Of special interest are cupric-superoxide, Cu-hydroperoxo and Cu-oxy complexes. Such investigations can contribute to an enhanced future application of C-H oxidation or oxygenation processes using air, as concerning societal energy goals.
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Affiliation(s)
- Jung Yoon Lee
- Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Kenneth D Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA.
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25
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Kim S, Ginsbach JW, Lee JY, Peterson RL, Liu JJ, Siegler MA, Sarjeant AA, Solomon EI, Karlin KD. Amine oxidative N-dealkylation via cupric hydroperoxide Cu-OOH homolytic cleavage followed by site-specific fenton chemistry. J Am Chem Soc 2015; 137:2867-74. [PMID: 25706825 PMCID: PMC4482616 DOI: 10.1021/ja508371q] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Copper(II) hydroperoxide species are significant intermediates in processes such as fuel cells and (bio)chemical oxidations, all involving stepwise reduction of molecular oxygen. We previously reported a Cu(II)-OOH species that performs oxidative N-dealkylation on a dibenzylamino group that is appended to the 6-position of a pyridyl donor of a tripodal tetradentate ligand. To obtain insights into the mechanism of this process, reaction kinetics and products were determined employing ligand substrates with various para-substituent dibenzyl pairs (-H,-H; -H,-Cl; -H,-OMe, and -Cl,-OMe), or with partially or fully deuterated dibenzyl N-(CH2Ph)2 moieties. A series of ligand-copper(II) bis-perchlorate complexes were synthesized, characterized, and the X-ray structures of the -H,-OMe analogue were determined. The corresponding metastable Cu(II)-OOH species were generated by addition of H2O2/base in acetone at -90 °C. These convert (t1/2 ≈ 53 s) to oxidatively N-dealkylated products, producing para-substituted benzaldehydes. Based on the experimental observations and supporting DFT calculations, a reaction mechanism involving dibenzylamine H-atom abstraction or electron-transfer oxidation by the Cu(II)-OOH entity could be ruled out. It is concluded that the chemistry proceeds by rate limiting Cu-O homolytic cleavage of the Cu(II)-(OOH) species, followed by site-specific copper Fenton chemistry. As a process of broad interest in copper as well as iron oxidative (bio)chemistries, a detailed computational analysis was performed, indicating that a Cu(I)OOH species undergoes O-O homolytic cleavage to yield a hydroxyl radical and Cu(II)OH rather than heterolytic cleavage to yield water and a Cu(II)-O(•-) species.
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Affiliation(s)
- Sunghee Kim
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Jake W. Ginsbach
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Jung Yoon Lee
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Ryan L. Peterson
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Jeffrey J. Liu
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Maxime A. Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Amy A. Sarjeant
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
| | - Edward I. Solomon
- Department of Chemistry, Stanford University, Stanford, California 94305
| | - Kenneth D. Karlin
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218
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26
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Tano T, Okubo Y, Kunishita A, Kubo M, Sugimoto H, Fujieda N, Ogura T, Itoh S. Redox Properties of a Mononuclear Copper(II)-Superoxide Complex. Inorg Chem 2013; 52:10431-7. [DOI: 10.1021/ic401261z] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tetsuro Tano
- Department
of Material and Life Science, Division of Advanced Science
and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuri Okubo
- Department
of Material and Life Science, Division of Advanced Science
and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Atsushi Kunishita
- Department
of Material and Life Science, Division of Advanced Science
and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Minoru Kubo
- Research
Institute
of Picobiology, Graduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho,
Ako-gun, Hyogo 678-1297, Japan
| | - Hideki Sugimoto
- Department
of Material and Life Science, Division of Advanced Science
and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Nobutaka Fujieda
- Department
of Material and Life Science, Division of Advanced Science
and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takashi Ogura
- Research
Institute
of Picobiology, Graduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho,
Ako-gun, Hyogo 678-1297, Japan
| | - Shinobu Itoh
- Department
of Material and Life Science, Division of Advanced Science
and Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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27
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Kakuda S, Peterson RL, Ohkubo K, Karlin KD, Fukuzumi S. Enhanced catalytic four-electron dioxygen (O2) and two-electron hydrogen peroxide (H2O2) reduction with a copper(II) complex possessing a pendant ligand pivalamido group. J Am Chem Soc 2013; 135:6513-22. [PMID: 23509853 PMCID: PMC3682076 DOI: 10.1021/ja3125977] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A copper complex, [(PV-tmpa)Cu(II)](ClO4)2 (1) [PV-tmpa = bis(pyrid-2-ylmethyl){[6-(pivalamido)pyrid-2-yl]methyl}amine], acts as a more efficient catalyst for the four-electron reduction of O2 by decamethylferrocene (Fc*) in the presence of trifluoroacetic acid (CF3COOH) in acetone as compared with the corresponding copper complex without a pivalamido group, [(tmpa)Cu(II)](ClO4)2 (2) (tmpa = tris(2-pyridylmethyl)amine). The rate constant (k(obs)) of formation of decamethylferrocenium ion (Fc*(+)) in the catalytic four-electron reduction of O2 by Fc* in the presence of a large excess CF3COOH and O2 obeyed first-order kinetics. The k(obs) value was proportional to the concentration of catalyst 1 or 2, whereas the k(obs) value remained constant irrespective of the concentration of CF3COOH or O2. This indicates that electron transfer from Fc* to 1 or 2 is the rate-determining step in the catalytic cycle of the four-electron reduction of O2 by Fc* in the presence of CF3COOH. The second-order catalytic rate constant (k(cat)) for 1 is 4 times larger than the corresponding value determined for 2. With the pivalamido group in 1 compared to 2, the Cu(II)/Cu(I) potentials are -0.23 and -0.05 V vs SCE, respectively. However, during catalytic turnover, the CF3COO(-) anion present readily binds to 2 shifting the resulting complex's redox potential to -0.35 V. The pivalamido group in 1 is found to inhibit anion binding. The overall effect is to make 1 easier to reduce (relative to 2) during catalysis, accounting for the relative k(cat) values observed. 1 is also an excellent catalyst for the two-electron two-proton reduction of H2O2 to water and is also more efficient than is 2. For both complexes, reaction rates are greater than for the overall four-electron O2-reduction to water, an important asset in the design of catalysts for the latter.
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Affiliation(s)
- Saya Kakuda
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, ALCA (JST), Osaka University, Suita, Osaka 565-0871, Japan
| | - Ryan L. Peterson
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218, USA
| | - Kei Ohkubo
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, ALCA (JST), Osaka University, Suita, Osaka 565-0871, Japan
| | - Kenneth D. Karlin
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Shunichi Fukuzumi
- Department of Chemistry, The Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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Das D, Lee YM, Ohkubo K, Nam W, Karlin KD, Fukuzumi S. Temperature-independent catalytic two-electron reduction of dioxygen by ferrocenes with a copper(II) tris[2-(2-pyridyl)ethyl]amine catalyst in the presence of perchloric acid. J Am Chem Soc 2013; 135:2825-34. [PMID: 23394287 DOI: 10.1021/ja312523u] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Selective two-electron plus two-proton (2e(-)/2H(+)) reduction of O(2) to hydrogen peroxide by ferrocene (Fc) or 1,1'-dimethylferrocene (Me(2)Fc) in the presence of perchloric acid is catalyzed efficiently by a mononuclear copper(II) complex, [Cu(II)(tepa)](2+) (1; tepa = tris[2-(2-pyridyl)ethyl]amine) in acetone. The E(1/2) value for [Cu(II)(tepa)](2+) as measured by cyclic voltammetry is 0.07 V vs Fc/Fc(+) in acetone, being significantly positive, which makes it possible to use relatively weak one-electron reductants such as Fc and Me(2)Fc for the overall two-electron reduction of O(2). Fast electron transfer from Fc or Me(2)Fc to 1 affords the corresponding Cu(I) complex [Cu(I)(tepa)](+) (2), which reacts at low temperature (193 K) with O(2), however only in the presence of HClO(4), to afford the hydroperoxo complex [Cu(II)(tepa)(OOH)](+) (3). A detailed kinetic study on the homogeneous catalytic system reveals the rate-determining step to be the O(2)-binding process in the presence of HClO(4) at lower temperature as well as at room temperature. The O(2)-binding kinetics in the presence of HClO(4) were studied, demonstrating that the rate of formation of the hydroperoxo complex 3 as well as the overall catalytic reaction remained virtually the same with changing temperature. The apparent lack of activation energy for the catalytic two-electron reduction of O(2) is shown to result from the existence of a pre-equilibrium between 2 and O(2) prior to the formation of the hydroperoxo complex 3. No further reduction of [Cu(II)(tepa)(OOH)](+) (3) by Fc or Me(2)Fc occurred, and instead 3 is protonated by HClO(4) to yield H(2)O(2) accompanied by regeneration of 1, thus completing the catalytic cycle for the two-electron reduction of O(2) by Fc or Me(2)Fc.
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Affiliation(s)
- Dipanwita Das
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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Biswas S, Dutta A, Debnath M, Dolai M, Das KK, Ali M. A novel thermally stable hydroperoxo–copper(ii) complex in a Cu(N2O2) chromophore of a potential N4O2 donor Schiff base ligand: synthesis, structure and catalytic studies. Dalton Trans 2013; 42:13210-9. [DOI: 10.1039/c3dt51359a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Kim S, Saracini C, Siegler MA, Drichko N, Karlin KD. Coordination chemistry and reactivity of a cupric hydroperoxide species featuring a proximal H-bonding substituent. Inorg Chem 2012; 51:12603-5. [PMID: 23153187 DOI: 10.1021/ic302071e] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
At -90 °C in acetone, a stable hydroperoxo complex [(BA)Cu(II)OOH](+) (2) (BA, a tetradentate N(4) ligand possessing a pendant -N(H)CH(2)C(6)H(5) group) is generated by reacting [(BA)Cu(II)(CH(3)COCH(3))](2+) with only 1 equiv of H(2)O(2)/Et(3)N. The exceptional stability of 2 is ascribed to internal H-bonding. Species 2 is also generated in a manner not previously known in copper chemistry, by adding 1.5 equiv of H(2)O(2) (no base) to the cuprous complex [(BA)Cu(I)](+). The broad implications for this finding are discussed. Species 2 slowly converts to a μ-1,2-peroxodicopper(II) analogue (3) characterized by UV-vis and resonance Raman spectroscopies. Unlike a close analogue not possessing internal H-bonding, 2 affords no oxidative reactivity with internal or external substrates. However, 2 can be protonated to release H(2)O(2), but only with HClO(4), while 1 equiv Et(3)N restores 2.
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Affiliation(s)
- Sunghee Kim
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
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31
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Hu J, Liao C, Zhao J. Three Cu(II) Complexes Based on Mixed Ligands: Their Structures and Catalytic Behaviour. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13371887324682] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Cu(II) complexes, [Cu(2,5-pydc)(bmi)(H2O)]n, [Cu2(H2O)2(2,6-pydc)2(btx)]·2H2O and [Cu(btc)2(bmi)2]·1.5H2O, (bmi = 1-[(benzotriazol-yl)methyl)-1H-1,3-imidazole; 2,5-H2pydc = pyridine-2,5-dicarboxylic acid; btx = 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene; H3btc = 1,3,5-benzenetricarboxylate) have been synthesised and their X-ray structures show that hydrogen bonds and π···π stacking interactions are employed in their construction. The complexes can effectively catalyse the oxidative coupling reaction of 2,6-di-tert-butylphenol in good yield and unique selectivity.
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Affiliation(s)
- Jiyong Hu
- Department of Chemistry and Chemical Engineering, Henan Univeristy of Urban Construction, Henan 467036, P. R. China
| | - Chunli Liao
- Department of Bioengineering, Henan Univeristy of Urban Construction, Henan 467036, P. R. China
| | - Jin'an Zhao
- Department of Chemistry and Chemical Engineering, Henan Univeristy of Urban Construction, Henan 467036, P. R. China
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32
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Siluvai GS, Vargheese B, Murthy NN. H2O2 reactivity of a dinuclear copper(II) complex incorporating a constrained binucleating polyaminopyridyl ligand and a phosphodiester coligand. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.04.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Chaloner L, Askari MS, Kutteh A, Schindler S, Ottenwaelder X. Formation and Reactivity of a Biomimetic Hydroperoxocopper(II) Cryptate. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100080] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Choi YJ, Cho KB, Kubo M, Ogura T, Karlin KD, Cho J, Nam W. Spectroscopic and computational characterization of CuII-OOR (R = H or cumyl) complexes bearing a Me6-tren ligand. Dalton Trans 2011; 40:2234-41. [PMID: 21258722 PMCID: PMC3318924 DOI: 10.1039/c0dt01036g] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A copper(II)-hydroperoxo complex, [Cu(Me(6)-tren)(OOH)](+) (2), and a copper(ii)-cumylperoxo complex, [Cu(Me(6)-tren)(OOC(CH(3))(2)Ph)](+) (3), were synthesized by reacting [Cu(Me(6)-tren)(CH(3)CN)](2+) (1) with H(2)O(2) and cumyl-OOH, respectively, in the presence of triethylamine. These intermediates, 2 and 3, were successfully characterized by various physicochemical methods such as UV-vis, ESI-MS, resonance Raman and EPR spectroscopies, leading us to propose structures of the Cu(II)-OOR species with a trigonal-bipyramidal geometry. Density functional theory (DFT) calculations provided geometric and electronic configurations of 2 and 3, showing trigonal bipyramidal copper(II)-OOR geometries. These copper(II)-hydroperoxo and -cumylperoxo complexes were inactive in electrophilic and nucleophilic oxidation reactions.
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Affiliation(s)
- Yu Jin Choi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, Korea; Fax: +82 2 3277 4441; Tel: +82 2 3277 4108
| | - Kyung-Bin Cho
- Department of Bioinspired Science, Ewha Womans University, Seoul, 120-750, Korea
| | - Minoru Kubo
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, Hyogo, 678-1297, Japan
| | - Takashi Ogura
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, Hyogo, 678-1297, Japan
| | - Kenneth D. Karlin
- Department of Bioinspired Science, Ewha Womans University, Seoul, 120-750, Korea
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, USA, 21218
| | - Jaeheung Cho
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, Korea; Fax: +82 2 3277 4441; Tel: +82 2 3277 4108
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, Korea; Fax: +82 2 3277 4441; Tel: +82 2 3277 4108
- Department of Bioinspired Science, Ewha Womans University, Seoul, 120-750, Korea
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35
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Tano T, Doi Y, Inosako M, Kunishita A, Kubo M, Ishimaru H, Ogura T, Sugimoto H, Itoh S. Nickel(II) Complexes of tpa Ligands with 6-Phenyl Substituents (Phntpa). Structure and H2O2-Reactivity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090346] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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36
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Le Poul N, Douziech B, Zeitouny J, Thiabaud G, Colas H, Conan F, Cosquer N, Jabin I, Lagrost C, Hapiot P, Reinaud O, Le Mest Y. Mimicking the Protein Access Channel to a Metal Center: Effect of a Funnel Complex on Dissociative versus Associative Copper Redox Chemistry. J Am Chem Soc 2009; 131:17800-7. [DOI: 10.1021/ja9055905] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicolas Le Poul
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Bénédicte Douziech
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Joceline Zeitouny
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Grégory Thiabaud
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Hélène Colas
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Françoise Conan
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Nathalie Cosquer
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Ivan Jabin
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Corinne Lagrost
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Philippe Hapiot
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Olivia Reinaud
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
| | - Yves Le Mest
- Laboratoire de Chimie, Electrochimie Moléculaires et Chimie Analytique, CNRS, UMR 6521, Université Européenne de Bretagne à Brest, 6 av. Le Gorgeu, 29238 Brest cedex, France, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS, UMR 8601, Université Paris Descartes, 45 rue des Saints-Pères, 75006 Paris, France, Laboratoire de Chimie Organique, Université Libre de Bruxelles, Brussels, Belgium, and Sciences Chimiques de Rennes, MaCSE, CNRS, UMR 6226, Université Européenne de Bretagne
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